Drag Reduction Of Complex Mixtures

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Drag Reduction Of Complex Mixtures

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Author : Keizo Watanabe
language : en
Publisher: Academic Press
Release Date : 2018-06-15

Drag Reduction Of Complex Mixtures written by Keizo Watanabe and has been published by Academic Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018-06-15 with Technology & Engineering categories.

Drag Reduction of Complex Mixtures discusses the concept of drag reduction phenomena in complex mixtures in internal and external flows that are shown experimentally by dividing flow patterns into three categories. The book is intended to support further experiments or analysis in drag reduction. As accurately modeling flow behavior with drag reduction is always complex, and since drag reducing additives or solid particles are mixed in fluids, this book covers these complex phenomena in a concise, but comprehensive manner. Comprehensively addresses a range of drag reduction themes involving different kinds of complex mixtures Provides data to support further experimentation and computer modeling of drag in complex flow Includes an introduction to the nature and characteristics of different kinds of complex mixtures

Turbulent Drag Reduction By Surfactant Additives

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Author : Feng-Chen Li
language : en
Publisher: John Wiley & Sons
Release Date : 2012-01-10

Turbulent Drag Reduction By Surfactant Additives written by Feng-Chen Li and has been published by John Wiley & Sons this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012-01-10 with Science categories.

Turbulent drag reduction by additives has long been a hot research topic. This phenomenon is inherently associated with multifold expertise. Solutions of drag-reducing additives are usually viscoelastic fluids having complicated rheological properties. Exploring the characteristics of drag-reduced turbulent flows calls for uniquely designed experimental and numerical simulation techniques and elaborate theoretical considerations. Pertinently understanding the turbulent drag reduction mechanism necessities mastering the fundamentals of turbulence and establishing a proper relationship between turbulence and the rheological properties induced by additives. Promoting the applications of the drag reduction phenomenon requires the knowledge from different fields such as chemical engineering, mechanical engineering, municipal engineering, and so on. This book gives a thorough elucidation of the turbulence characteristics and rheological behaviors, theories, special techniques and application issues for drag-reducing flows by surfactant additives based on the state-of-the-art of scientific research results through the latest experimental studies, numerical simulations and theoretical analyses. Covers turbulent drag reduction, heat transfer reduction, complex rheology and the real-world applications of drag reduction Introduces advanced testing techniques, such as PIV, LDA, and their applications in current experiments, illustrated with multiple diagrams and equations Real-world examples of the topic’s increasingly important industrial applications enable readers to implement cost- and energy-saving measures Explains the tools before presenting the research results, to give readers coverage of the subject from both theoretical and experimental viewpoints Consolidates interdisciplinary information on turbulent drag reduction by additives Turbulent Drag Reduction by Surfactant Additives is geared for researchers, graduate students, and engineers in the fields of Fluid Mechanics, Mechanical Engineering, Turbulence, Chemical Engineering, Municipal Engineering. Researchers and practitioners involved in the fields of Flow Control, Chemistry, Computational Fluid Dynamics, Experimental Fluid Dynamics, and Rheology will also find this book to be a much-needed reference on the topic.

The Flow Of Complex Mixtures In Pipes

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Author : George Wheeler Govier
language : en
Publisher:
Release Date : 1977

The Flow Of Complex Mixtures In Pipes written by George Wheeler Govier and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1977 with Technology & Engineering categories.

Drag Reduction Efficiency For Polymer Surfactant Mixtures

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Author : C. A. Kim
language : en
Publisher:
Release Date : 1996

Drag Reduction Efficiency For Polymer Surfactant Mixtures written by C. A. Kim and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1996 with Chemical engineering categories.

Surfactant Drag Reduction Using Mixed Counterions

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Author : Diana Snelling
language : en
Publisher:
Release Date : 2006

Surfactant Drag Reduction Using Mixed Counterions written by Diana Snelling and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2006 with categories.

Abstract: This study focused on using mixtures of counterions to improve the performance of a cationic surfactant over single counterions. The concentration of surfactant and total counterion concentration remained constant while the ratio of each counterion was varied. The cationic surfactant cetyltrimethylammonium chloride (CTAC) was tested with counterions sodium ethylbenzenesulfonate (NaEbs), sodium 3-hydroxy-2-naphthoate (SHN), and sodium salicylate (NaSal). Organic counterions stabilize threadlike micelles in surfactant solutions and enable turbulent drag reduction. Cryo-TEM imaging was used to visualize the nanostructures of our complex fluids. Counterion mixtures were tested in both water and ethylene glycol/water solutions. Certain ratios of counterions resulted in increased maximum drag reduction and effective temperature range compared with either counterion at the same total counterion concentration. The aqueous system of 75% NaSal and 25% SHN gave effective drag reduction over the entire temperature range of our testing system (2-95°C). This surfactant system is a candidate for use in conventional aqueous district cooling and in aqueous district heating systems. Surfactant solutions with mixed counterions in 20% ethylene glycol/water showed the same pattern of behavior as in water but with less effective drag reduction. Lower effective upper temperatures and lower maximum drag reductions were found in the 20% EG/water solvent.

Effects On Drag Reduction Of Mixtures Of High Polymer Additives In Distilled Water Flowing In Straight Circular Tubes

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Author : Robert Edgar Hammett
language : en
Publisher:
Release Date : 1974

Effects On Drag Reduction Of Mixtures Of High Polymer Additives In Distilled Water Flowing In Straight Circular Tubes written by Robert Edgar Hammett and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1974 with categories.

Rheology Of Drag Reducing Fluids

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Author : Aroon Shenoy
language : en
Publisher: Springer Nature
Release Date : 2020-03-25

Rheology Of Drag Reducing Fluids written by Aroon Shenoy and has been published by Springer Nature this book supported file pdf, txt, epub, kindle and other format this book has been release on 2020-03-25 with Technology & Engineering categories.

​This book explains theoretical derivations and presents expressions for fluid and convective turbulent flow of mildly elastic fluids in various internal and external flow situations involving different types of geometries, such as the smooth/rough circular pipes, annular ducts, curved tubes, vertical flat plates, and channels. Understanding the methodology of the analyses facilitates appreciation for the rationale used for deriving expressions of parameters relevant to the turbulent flow of mildly elastic fluids. This knowledge serves as a driving force for developing new ideas, investigating new situations, and extending theoretical analyses to other unexplored areas of the rheology of mildly elastic drag reducing fluids.The book suits a range of functions--it can be used to teach elective upper-level undergraduate or graduate courses for chemical engineers, material scientists, mechanical engineers, and polymer scientists; guide researchers unexposed to this alluring and interesting area of drag reduction; and serve as a reference to all who want to explore and expand the areas dealt with in this book.

Drag Reduction In Pipeline By Polymer Surfactant And Polymer Polymer Mixtures

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Author : Weicong Huang
language : en
Publisher:
Release Date : 2015

Drag Reduction In Pipeline By Polymer Surfactant And Polymer Polymer Mixtures written by Weicong Huang and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2015 with Frictional resistance (Hydrodynamics) categories.

Extensive researches have been conducted to investigate into the drag reduction behavior of the polymer-surfactant mixture and the polymer-polymer mixture. The drag reduction effect of PAM (polyacrylamide), PEO (polyethylene oxide) and CMC (carboxymethyl cellulose) has already been studied respectively. However, the drag reduction effects of the combination of these polymers have not been studied before. It is interesting to investigate into these combinations because the synergy between different polymers can enhance the drag reduction effect under the right condition. SDS (sodium dodecyl sulfate) is a surfactant widely used in many commercially available detergents. When dissolved in water and circulated in the flow loop, the drag reduction effect of SDS has also been observed. Therefore, the combination of PAM and SDS is also worth exploring. The synergy between the polymer and the surfactant may strengthen the drag reduction effect. In this thesis, the drag reduction effects are investigated for the following combinations: the PAM-SDS system, the PAM-CMC system and the PEO-CMC system. The mixed solutions are circulated in the flow loop, where the pressure drop over a certain distance and the flow rate are recorded in order to plot the friction factor against the Reynolds number. In addition, the viscosity, conductivity and surface tension of the mixed solutions are studied at bench-scale to look for the synergy in the mixed system.

Advanced Manufacturing Processes

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Author : Volodymyr Tonkonogyi
language : en
Publisher: Springer Nature
Release Date : 2020-03-27

Advanced Manufacturing Processes written by Volodymyr Tonkonogyi and has been published by Springer Nature this book supported file pdf, txt, epub, kindle and other format this book has been release on 2020-03-27 with Technology & Engineering categories.

This book offers a timely yet comprehensive snapshot of innovative research and developments in the area of manufacturing. It covers a wide range of manufacturing processes, such as cutting, coatings, and grinding, highlighting the advantages provided by the use of new materials and composites, as well as new methods and technologies. It discusses topics in energy generation and pollution prevention. It shows how computational methods and mathematical models have been applied to solve a number of issues in both theoretical and applied research. Based on selected papers presented at the Grabchenko’s International Conference on Advanced Manufacturing Processes (InterPartner-2019), held in Odessa, Ukraine on September 10-13, 2019, this book offers a timely overview and extensive information on trends and technologies in the area of manufacturing, mechanical and materials engineering. It is also intended to facilitate communication and collaboration between different groups working on similar topics, and to offer a bridge between academic and industrial researchers.

Drag Reduction

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Author : American Institute of Chemical Engineers
language : en
Publisher:
Release Date : 1971

Drag Reduction written by American Institute of Chemical Engineers and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1971 with Technology & Engineering categories.